Angle-cock device



Aug. 21, 1928. 1,681,580

. C. C. FARMER ANGLE COCK DEVICE Filed April 20, 1927 6 INVENTOR CLYDE C. FARMER ATTORNEY ABY l rear of the closed angle cock cannotbe con- Patented Aug; 21, '1928.

UNrrEn ,STATES Iii'rnlv-T OFFICE.

cLYnn c. FARMER, on Iufrrsnunen, PENNSYLVANIA, AssIGNoi/t'ro THE wNs'rINGf HOUSE vAIR BRAKE COIVLPANY7 l01? WILIKVIERDING, PENNSYLVANIA, A COBPORA- u TIoN or I:uNNsYLvANIA., y.

ANGLE-000K DEVICE.

i Application lediApril 20, 1927. Serial No. 185,187.

This invention relates to angle cocks of the type employed in railway fluid pressure brake systems.

11:' an angle vcock" of the 4usual type be closedat any point in the train,-either accidentally or maliciously, the brakes at the 'trolled by thef engineman.

rllhe principal obi` ect of Inyinventionr isr to provide an improved angle cock havin@` means for o'bviating they above diiiicultyjan ensuring that the brakeskmay. be controlled throughoutithe train, even' i1 an'angle cock should become closed In the accompanyingdrawing, Fig. 1 is a planvievxr7 partly insection,`of an angle cock' einbodyingvmy invention and Figs. 2,' 8, and Zl-,Yvieivs illustrating diiiilerentpositions of the `plug valveof the angle cock.

rlhe angle cock may comprise a 'cock bod7 1, containing a plug valve@ having the usual port 3 adapted in the open position of the valve to connect the conduit 4 of the angle end 5 ot the angle cock With the conduit 6 of the brake pipe end 7. f

Disposed vin the cock body is a by-pass passage 8', leading from conduit 4, and a bypass passage 9, leading from the conduit 6.

A valve piston 10 is provided forcontrolling communication between the passages 8 and Sand in its seated position, -the piston 10 is subject on the seated area Within the seat ring 11 to the- 3ressure of fluid as supplied from the conduit 6 through-passage 9, While the outer seated `area is open to the conduit 4 through passage 8.

rlhe chamber 12 at the outer side ofthe U valve piston is connected to a passage' 13,V

which leads tothe seat of the plug. valve 2 and contained in saidV chamber is a coil spring 14 which acts onthevalve piston 10.

The plug valve 2 is' provided with a cavity 15 which is adapted to connectlpassage 13 with an atmospherev exhaustfport 16 in" all positions of the plug valve in which conn' inunication from conduit 6 through port 8 with conduit 4 is closed.

' Y 1 TWhen cars are 4'C/QlllQleCltogetherand um angle cock is in its open position, With port Sconnecting the conduits 4 and 6, thebrake pipe may be charged with Huid under pressure in the usual manner. Cavity 15 in'this position does not ,register withk exhaust port is, but erinnerte conduit with passage 13.#

Consequently, fluidunder pressure is sup plied `from conduitG to chamber 12, and since the underside of the valve piston Jis subject to the same Huid pressure as suppliedvr through passages 9 and 8, .the spring 1414r 5l. tu Iffan `angle cock .should become closed,:`

holds the valve piston 10 seated.l y L eitherbyaccident'or designpthe cavity 15 .will connectpassage 13 to exhaust port 16,` and Huid underpressure in chamber 1Q Willy be vented to the atmosphere, with theresult the valve piston upwardly, so that communipassage 9 and passage 8y to conduit 4. A bypass 4communication around the closed angle.`

cock heilig' thus automatically established bv the .movement of the angle cock to the closed c position,` it will be` seen that luidnuder4 pressure is lfree to iioWin eitherdirection through the angle cock, so tl'iatthebrakes may jbe ,controlled throughout Vthe train in Vso as to permit fluid under pressure to flow through the hose connections to the uncharged car at a suficiently lo7 rate to prevent an emergency application of the brakes on the train, the angle cock on the uncharged car being in open position. In such a posi tion, fluid will; alsofflow from conduit 4 through cavity 15 and passage 13 to chamber 12, and'although iiuid under pressure is also supplied through passage 8 to the area ivithin the seat ring 11, the piston 10 will beheld seated, ,due to the larger area of the `pistonA Which isV exposed to fluid pressure in `cham-K ber 12. V

l It Will thusbe evident thatwvhen an uncharged'car is connected to a train, the bypass around the plug valve Will not ber yopened during the timei that the car is" Utl Vthat theiuid pressureacting on the under n yside of the valve piston Will operateto shift cation is openedwfrom yconduit 6 through` 'the saine manner, as "though an angle cock being charged With fluid `under pressure Nfrom thel train.

There is no pressure in the hose at the end of the last car of a train, so that lthe outer seated areafof the valve piston 1Q is at :at inuspherie pteassural and the spring 14 sufficient force to hold the valve. piston seated I claim as new and desire to secure by Let'- ters Patent, isc L f f v1. The Combination with :in angle' Cock having aibrske pipe controllingvzil\ie, vof

`valve inezins `forcontrolling, a` ivy-.pass pas-V sage around said vulve, said ,valve iinezins flizivini' oneside sub'eet to .brake 'ai se, presfi i l sure :ind havingY vthe other side oonneeted to the atmosphere in :i elosedposition ofthe Y valve.' i

` QivThe combination kwith an -zing'lexeo'ek 'inw/ing a' brake pipe eon'trolling;` Valvegof 'va'lveniezins forfeontrolliiig 'it by-pass passage varound vsaid valve, said valve Ineens 'having one side subject to brake pipe preis-s suie and liavingthefother side connected to the atmosphere bythe movementol said -valve `to n position closing communication Vthrough the brakepipe. f

The Ieoinbinstion with. i brakeV pipe controlling valve, of if'ilveineanssubject on one sidefto'bi'zikepipe pressure for' control-,- linge 'by-pass for establishing eoinmuuiesi tion around said x'falveand means controlled by said valve for eonneotiiig the vopposite side of said valve means tothe atmosphere.

il. The combination Lwith .at brake pipe cutting Controlling.,r valve,1of a viilveufor controlling :t vbyfpziss y-ro'in one side of the Controlling yvelveto,the other side, u piston for operat- -.ing snid'by-pass vnlvdfsubjeet on one side to brake pipe pressure, and ined-ns controlled by sziid controllingrr yvalve' for venting kHuid rfromtlie other side-of said piston.

5.`Tliecombination with a brake pipe ,eontiollingftizilyq of zi. valve Yfor controlling mby-passvifroin one .side vof the controlling 'rztlve to the other side,' a piston ilor operzit-l iugiszid,byfpassielvea subject ou one side vtobi-ske pipe pressure. and ineens Controlled by said controlling valve for supplying' fluid" tonnd venting` fluid from :the oppositefside of siiidpston. f

y6,. The -`combination,Within brake rpipe Controlling valve7V of@ viilie for controlling .ai byspziss Afrom one side of the eontrollinhfT mlve to the other side, ziy piston ,oroperztt-Y ing snid by-pnssr Valve, subjecty on one side valveV being;- adapted to' vent iluid under f pres'- sure from Ythe oppositesidefof siiidpiston when the control-ling; valve is in@ position off vjeoinrnuiiiezition through theY biale` pipe zindto supplyffluid'under pressure thereto whenv the ycontrolling `Valve is in a, position` establishing eoininuniezttio ny lthrough the brake pipe. g

- ln testiinonywhereof I havehereunto set inv hand i f GLYDEC; FARMER.

55 'to brake ypipe pressure, .siiideontrolling 

